28528607 has 2 divisors, whose sum is σ = 28528608. Its totient is φ = 28528606.

The previous prime is 28528603. The next prime is 28528609. The reversal of 28528607 is 70682582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28528607 - 2² = 28528603 is a prime.

Together with 28528609, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28528603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14264303 + 14264304.

It is an arithmetic number, because the mean of its divisors is an integer number (14264304).

Almost surely, 2^28528607 is an apocalyptic number.

28528607 is a deficient number, since it is larger than the sum of its proper divisors (1).

28528607 is an equidigital number, since it uses as much as digits as its factorization.

28528607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 28528607 is about 5341.2177450465. The cubic root of 28528607 is about 305.5579038840.

The spelling of 28528607 in words is "twenty-eight million, five hundred twenty-eight thousand, six hundred seven".